Percy g



(No Model.)

P. G. WILLIAMS 8a A. W. ROOVERS.

COIN RELEASED SPIROMETER.

No. 403,978. Patented May 28, 1889.

It PEIERS, Phow-uma n ner, Wuhingmn, DJ;

UNITED STATES ATENT OFFICE.

PERCY G. .VILLIAMS AND ALFRED IV. ROOVERS, OF BROOKLYN, NEW YORK;

SAID ROOVERS ASSIGNOR TO SAID IVILLIAMS.

COIN-RELEASED SPIROMETER.

SPECIFICATION forming part of Letters Patent No. 403,978, dated May 28, 1889.

Application filed December 24, 1888. Serial No. 294,464. (No model.)

To all whom it may concern.-

Be it known that we, PERCY G. \VILLIAMS and ALFRED W. Roovnns, of Brooklyn, in the county of Kings and State of New York, have invented a certain new and useful Improvement in Lung-Testers, of which the following is a specification.

WVe will describe a lung-tester embodying our improvement, and then point out the novel features in the claims.

In the accompanying drawings, Figure 1 is a back View of a lung-tester embodying our improvement, the back cover or back support being omitted in this view. Fig. 2 is a vertical section of the same. Fig. 3 is another vertical section; but this is taken in a different plane.

Similar letters of reference designate corresponding parts in all the figures.

A designates the case. It is shown as circular in form. It may, however, be made of any other form. It can with advantage be made of wood or metal, or partly wood and metal. It may be closed in the rear by a cover, or it may be secured at the rear to a standard or support, (represented by the line B, Fig. 2,) and be closed in that manner.

0 designates a chamber shown as formed in the rear side of the front of the case. It is represented as circular in form. It is closed at the front. Across the rear extends a diaphragm, O. This may advantageously be made of metal and provided with circular corrugations to afford provision for considerable movement at the central portion. In width it may be made like the diaphragm commonly employed in a steam or other pressure gage. secured by means of a ring, 0, clamping it against the side wall of the chamber. Screws 0 may be employed for securing the ring 0 in place.

D designates a lever. As shown, it is fulcrumed to a bridge-piece, E, that is fastened to the ring 0, whereby the diaphragm C is secured in place, and also to a support, 0 One arm of this lever D bears upon the dia phragm at or near the center. The other arm has pivotally connected to it a rod, F. This rod F is pivotally connected to one arm of a lever, G. The other arm is provided with a The edges of the diaphragm are toothed segment that engages with a pinion, H, upon a shaft, II. Thisshaft H is located centrally in the case A and carries an index, H figures marked upon a dial arranged at the front of the case A. The shaft ll also carries a locking-plate, 11 This consists of a plate of circular form provided with a radial slot or notch 71 and an arm h extendin 6o beyond the slot radially. This arm has in one side a notch, 7L2, which opens into the notch h. The locking-plate is therefore provided with an L-shaped notch or slot formed of two portions, h and 7& forms a projection or shoulder at its upper end, which shoulder projects over and in line with the notch h, thus forming a temporary stop for the lever I.

I designates a lever fulcrumed between the ends upon a support, t, provided at one end with a receptacle, 2'', and provided with a hook or cross-piece, 1 at the other end. A weight, i adjustably secured upon that arm of the lever I which is provided with the hook or cross-piece 2' keeps this lever in a horizontal position so long as there is no coin in the receptacle i. When the lever I is in this position, the hook or cross-piece i will engage with the notch h in the locking-plate notch h of the locking-plate H but will not 0 discharge the coin, as the stop at the upper end of the notch It will prevent any further movement till the diaphragm is operated. Any motion then imparted to the diaphragm of the chamber by or expelled from the lungs will oscillate the lever D, and through it the lever G, so as to effect a rotation of the shaft H and a movement of the index H over the dial.

A coin may be deposited in the receptacle i by slipping it into a chute, J, having an opening at the exterior of the case and ex- The index operates in conjunction with 55 The notch h 65 If, however, a coin of the proper 85 tending at the lower end close to the coin-receptacle. When the lever I is tilted to discharge the coin, it will assume the position indicated by dotted lines. It has no bottom, and when it tilts downwardly the coin-receptacle will come into proximity with an ejector, K, consisting of a stationary piece. This ejector will disengage the coin from the receptacle '5', so that it will readily slip out. The arm 77. will come in contact with the hook or cross-piece 2' of the lever I when such lever is tilted downwardly by a coin, and said arm h will thus prevent the index from making more than one revolution. This arm will also insure the re-engagement of the hook or cross-piece i with the locking-plate after the pressure exerted upon the diaphragm 0' shall have ceased.

Air may be supplied to the chamber 0 in any desirable manner-as, for instance, through a rubber tube, L, furnished at the outer end with a mouth-piece, L.

The daphragm O is also made to ring a bell. It operates for this purpose upon a lever, M. This is a bell-crank lever pivotally connected between the ends to the bridge E. One arm bears upon the diaphragm. The other has pivotally connected to it a rod, N. This rod N is pivotally connected to one arm of a lever, O. The lever O carries the clapper P of the bell P. This clapper is sustained by a spring, 19 The clapper is connected to a piece, 19, which is pivoted to the lever 0, so as to be free to tilt upwardly, but not downwardly. When the diaphragm C is distended, this lever 0 will depress the clapper, and when the diaphragm resumes its normal position the spring will cause the clapper to strike the bell.

It will be observed that the lung-tester which we have illustrated is one constructed for testing the strength of the lungs. Obviously, the improvement might be employed line with said notch, and a coin-operated lever engaging with said plate, said lever being operated by the weight of acoin, substantially as specified.

3. The combination of a motor constructed to be operated by lung-power, an index operated thereby, a locking-plate connected to said index provided with a radial notch and a radial arm having a stop-shoulder in line with the notch, and a coin-operated lever, substantially as specified.

4. The combination of a motor constructed to be operated by lung-power, an index operated thereby, a lock for said index comprising a notched plate having a stop and a lever operated by the weight of a coin, and a bell operated by said motor, substantially as specified.

5. The combination, with the diaphragm C, of the lever D, segment-lever G, shaft H, locking-plate H having a stop, a lever, I, having an adjustable weight, a coin-receptacle, and an ejector, substantially as specified.

PERCY G. WILLIAMS. ALFRED W. ROOVERS. Witnesses;

S. O. EDMONDS, FRED KEMPER.

index, having a radial notch and a stop in 

